Uhh, if you can't move a steering wheel with one hand you have no strength. Been there, avoided an accident at 85mph on multiple occasions.
I find it comfortable to rest my left arm in my lap and hold the steering wheel at the 9 o'clock with it and the right hand just sits off somewhere. It's comfortable, I can react well with it, and if I need two hands quickly, one hand is already in position.
It's proper etiquette for me to engine brake anyone who gets too close. It's pretty common for some of these guys in lifted trucks to drive with this mentality of, "I'm big and bad, fear me." and it pisses me off to no end. They will tailgate people, speed around always 20 over the speed limit, gas on it to jump in gaps too small so you have to brake, and other **** like this. I've almost had plenty rear end me because I downshift into 2nd gear at 55mph. No brake lights and they're that close and they just about freak out. And what are they going to tell a cop if they do hit me? I didn't hit my brakes...